CVE-2024-40711
CriticalExploitedPublic exploitA deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE).
Published Sep 7, 2024 · Updated Oct 30, 2025
Key Facts
Patch immediately- CVE-2024-40711 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Veeam Backup \& Replication, Backup and Recovery.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 23, 2024 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 90% probability of exploitation in the next 30 days.
- Fixed versions are available, including Veeam Backup \& Replication 12.2.0.334.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
90%
Higher than 99.8% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2024-40711 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE).
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Oct 17, 2024 | Nov 7, 2024 | Known |
| Industry KEV feed | Apr 23, 2024 | Nov 7, 2024 | Known |
| CIRCL KEV | Oct 17, 2024 | Nov 7, 2024 | Known |
| ENISA EUVD | Oct 17, 2024 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Veeam Backup \& ReplicationVeeam | See advisory | 12.2.0.334 |
| Backup and Recovery | >= 12.1.2 | n/a |
Patched Releases
Veeam Backup \& Replication
12.2.0.334
Timeline
Added to Industry KEV feed
Apr 23, 2024
Publicly disclosed
Sep 7, 2024
Added to CISA KEV
Oct 17, 2024
Added to CIRCL KEV
Oct 17, 2024
Added to ENISA EUVD
Oct 17, 2024
Last updated
Oct 30, 2025
Weakness Type
- CWE-502 Deserialization of Untrusted Data
References
- advisoryhttps://www.veeam.com/kb4649
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploithttps://labs.watchtowr.com/veeam-backup-response-rce-with-auth-but-mostly-without-auth-cve-2024-40711-2/
FAQ
Common Questions.
A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE).
Affected: Veeam Backup \& Replication; Backup and Recovery versions >= 12.1.2. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Apr 23, 2024 and is known to be used in ransomware campaigns.
Yes. It was added on Oct 17, 2024 with a federal remediation due date of Nov 7, 2024.
Public exploit code is available.
Fixed versions are available, including Veeam Backup \& Replication 12.2.0.334.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2024-40711 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo